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IEEE Transactions on Vehicular Technology > 2010 > 59 > 6 > 2898 - 2905
IEEE Transactions on Vehicular Technology > 2009 > 58 > 6 > 2815 - 2824
IEEE Communications Letters > 2008 > 12 > 10 > 743 - 745
2006 International Telecommunications Symposium > 672 - 677